HP LaserJet Enterprise Signature Validation signature verification

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.5$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in HP LaserJet Enterprise, PageWide Enterprise, LaserJet Managed and OfficeJet Enterprise. Affected by this vulnerability is an unknown functionality of the component Signature Validation. Such manipulation leads to signature verification. This vulnerability is documented as CVE-2018-5923. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in HP LaserJet Enterprise, PageWide Enterprise, LaserJet Managed and OfficeJet Enterprise (the affected version unknown). It has been rated as critical. Affected by this issue is an unknown part of the component Signature Validation. The manipulation with an unknown input leads to a signature verification vulnerability. Using CWE to declare the problem leads to CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In HP LaserJet Enterprise, HP PageWide Enterprise, HP LaserJet Managed, and HP OfficeJet Enterprise Printers, solution application signature checking may allow potential execution of arbitrary code.

The bug was discovered 10/27/2018. The weakness was released 03/27/2019 (Website). The advisory is available at support.hp.com. This vulnerability is handled as CVE-2018-5923 since 01/19/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 05/22/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 151 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/19/2018 🔍
10/27/2018 +281 days 🔍
03/27/2019 +151 days 🔍
03/28/2019 +1 days 🔍
05/22/2020 +421 days 🔍

Sourcesinfo

Vendor: hp.com

Advisory: support.hp.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-5923 (🔍)
GCVE (CVE): GCVE-0-2018-5923
GCVE (VulDB): GCVE-100-132506

Entryinfo

Created: 03/28/2019 11:40
Updated: 05/22/2020 09:38
Changes: 03/28/2019 11:40 (54), 05/22/2020 09:38 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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